Results 41 to 50 of about 22,911 (308)

The Applicability of Traditional Protection Methods to Lines Emanating from VSC-HVDC Interconnectors and a Novel Protection Principle

Energies, 2016
Voltage source converter (VSC)-based high voltage direct current (VSC-HVDC) interconnectors can realize accurate and fast control of power transmission among AC networks, and provide emergency power support for AC networks. VSC-HVDC interconnectors bring
Shimin Xue, Jingyue Yang, Yanxia Chen, Cunping Wang, Zhe Shi, Miao Cui, Botong Li   +6 more
doaj   +1 more source

Single Line-to-Ground Fault Type Multilevel Classification in Distribution Network Using Realistic Recorded Waveform

, 2023
The further identification of fault types for single line-to-ground faults (SLGFs) in distribution networks is conducive to determining the cause of grounding faults and formulating targeted measures for hidden danger treatment and fault prevention.
Yue Liu, Ji Sun, Chenjing Li, Haokun Lin, Jiajun Liu   +4 more
core   +1 more source

Comprehensive Exploration of Limitations of Simplified Machine Learning Algorithm for Fault Diagnosis Under Fault and Ground Resistances of Multiterminal High-Voltage Direct Current System

Journal of Sensor and Actuator Networks
High power density and better efficiency make the multiterminal high-voltage direct current (MT-HVDC) system the best candidate for long-distance bulk power transfer in the cases of onshore and offshore power systems.
Raheel Muzzammel
doaj   +1 more source

Analysis of energy dissipation in resistive superconducting fault-current limiters for optimal power system performance

, 2011
Fault levels in electrical distribution systems are rising due to the increasing presence of distributed generation, and this rising trend is expected to continue in the future.
Burt, Graeme, Bright, C.G., Steven M. Blair, Nand K. Singh, Blair, Steven Macpherson, Graeme M. Burt, Booth, Campbell, Chris G. Bright, Singh, Nand, Campbell D. Booth   +9 more
core   +1 more source

Enhancing Tunnel Fault-Resistance with Combined Seismic Joints and Steel–Polypropylene Fiber Concrete Linings

Buildings
Tunnel engineering is frequently undertaken in complex geological environments, which present heightened risks during construction and operation, particularly in active fault zones. This necessitates the enhancement of fault resistance.
You Wang, Zixi Yin, Rui Wang, Bosong Ding, Ziwei Wang   +4 more
doaj   +1 more source

Testing of Level Shifters in Multiple Voltage Designs [PDF]

, 2007
The use of multiple voltages for different cores is becoming a widely accepted technique for efficient power management. Level shifters are used as interfaces between voltage domains.
Zain Ali, Noohul Basheer, Zwolinski, Mark, Noohul Basheer Zain Ali, Bashir M Al-Hashimi, Al-Hashimi, Bashir, Mark Zwolinski   +5 more
core   +1 more source

Directional element for faulty feeder identification of high‐resistance fault in high‐surety power supply systems

IET Generation, Transmission & Distribution, 2021
The high‐surety power supply systems are gaining great attention to enhance the reliability of uninterruptable power supplies. A high‐resistance fault along a high‐surety power supply feeder results in a low fault current, making the conventional high ...
Roja Rouhani, Iman Sadeghkhani, Josep M. Guerrero   +2 more
doaj   +1 more source

Variation aware analysis of bridging fault testing [PDF]

, 2008
This paper investigates the impact of process variation on test quality with regard to resistive bridging faults. The input logic threshold voltage and gate drive strength parameters are analyzed regarding their process variation induced influence on ...
Ingelsson, Urban, Harrod, Peter, Bashir M. Al-Hashimi, Al-Hashimi, Bashir M., Urban Ingelsson, Peter Harrod   +5 more
core   +1 more source

Detailed modelling and analysis of digital mho distance relay with single-pole operation

Acta Polytechnica, 2021
This paper introduces a methodology for modelling a digital admittance-type distance relay using PSCAD/EMTDC. The proposed distance relay was tested in a simulation of the Brazilian power grid with predetermined fault scenarios. The goal of this paper is
Paulo Henrique Barbosa de Souza Pinheiro, Mayara Helena Moreira Nogueira Santos, Angelo Cesar Colombini, Bruno Wanderley França, Marcio Zamboti Fortes   +4 more
doaj   +1 more source

Fault estimation and fault-tolerant control for discrete-time dynamic systems

, 2015
In this paper, a novel discrete-time estimator is proposed, which is employed for simultaneous estimation of system states, and actuator/sensor faults in a discrete-time dynamic system.
Gao, Zhiwei
core   +1 more source